• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.1
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• pp.156-163
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• 2012

The price stabilization policies which require the underwriters to maintain post-IPO prices at some level (stabilization duty) or give put-back options to investors, have survived for eight years until June, 2006. The purpose of this study is to analyze the effect of price stabilization policies upon IPO underpricing in KOSDAQ. The study decomposes the influence of the price stabilization policies on IPO underpricing into ex-ante and ex-post effect. The price stabilization policies have shown to increase the IPO underpricing both at ex-ante and ex post bases. And the ex-ante effect is greater than ex-post effect. Among policies, the price stabilization duty magnifies the underpricing more than put-back option. This study differentiate from the precedented studies by including the whole period in which those policies are in act and by decomposing the IPO underpricing effects into ex-ante and ex-post bases.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.264-268
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• 2008

미래 발생 가능한 수문 및 기상현상의 예측과정은 지식의 부족과 자연현상의 다양성으로 인해 불확실성을 포함하게 된다. 하지만 많은 예측들은 아직까지 확정적으로 제공되고 있으며, 결과적으로 예측결과의 불확실성 정도를 제공하지 못하고 있다. 앙상블 유량예측(ESP, Ensemble Streamflow Prediction)은 이러한 불확실성을 고려하여 수자원시스템의 의사결정에 있어 중요한 요소 중 하나인 유량예측을 수행할 수 있는 방법이다. 하지만 ESP의 결과는 기상자료, 유역 초기조건, 수문모형의 매개변수, 단순화된 수문모형에 의해 비교적 큰 불확실성을 포함하게 되며, 따라서 실제적인 현업에서의 사용을 위해서는 불확실성 정도를 줄이기 위한 사전 및 사후처리 과정이 요구된다. 본 연구에서는 국내에서 활용 가능한 기후 예보자료를 사용하여 앙상블 유량예측에 적용할 수 있는 사전처리 방안들을 검토하고, 국내에서 사후처리를 위해 적용되었던 최적선형 보정기법에 더해 다양한 기법들을 강우유출모형인 TANK모형의 모의결과 보정에 적용하였다. 사전 및 사후처리를 적용한 결과 기상자료와 유량예측과정에 존재하는 불확실성을 저감시키는 것이 가능하였다. 특히 사전 및 사후 처리가 동시에 적용되었을 경우 그 향상 정도가 단순히 각각의 방법에 의한 향상 정도를 합한 것보다 높게 나타날 수 있음이 확인되었다. 사전 및 사후처리를 동시에 적용한 경우 이수기에는 RPS(Ranked Probability Score) 평가방법 내에서 54%를, 홍수기에는 8%를 향상시키는 것이 가능하였다.

• Journal of the Korea Society of Computer and Information
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• v.9 no.1
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• pp.111-121
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• 2004

This paper presents the methods of evaluating validity and effectiveness of informatization budget investment for e-Government, through the preliminary evaluation. the progress evaluation and the Post evaluation of the investment, and a quantitative evaluation model which improves conformance of IT ROI (Return On Investment) using the evaluation results. the right evaluation targets of informatization investment for the development project to GDOC(Government electronic Document Distribution Center), and KPIs(Key Performance Indexes) which is enable to evaluate objectively effectiveness in the preliminary and the post evaluation phases are developed, and according to using the quantitative evaluation model . improved effectiveness evaluation results for each index in the point of view of usage and innovation are come out.

• 한국정보교육학회:학술대회논문집
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• 2005.08a
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• pp.228-237
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• 2005

본 연구에서는 협동학습의 사전평가, 모둠구성, 사후평가, 점수결과처리의 단계에서 교사의 업무 부담을 혁신적으로 덜어 주고 높은 교육적 효과를 가져다 줄 수 있는 협동학습 지원 시스템을 설계하였다. 본 시스템의 특징은 첫째, 협동학습에서 사전 사후평가의 채점 및 점수산출과정과 모둠구성단계를 자동화함으로서, 수업준비와 결과처리의 부담과 시간을 줄일 수 있는 시스템을 설계하였다. 둘째, 다양한 종류의 협동학습에서 활용 가능하도록 학습자의 성별, 성향, 성적 등의 포괄적인 모둠구성 기준을 사용할 수 있도록 하였다. 셋째, 사전평가, 과정평가, 형성평가, 자기평가, 모둠평가 등의 다양한 평가방법을 이용할 수 있도록 구성하였다.

• Journal of Naturopathy
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• v.11 no.1
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• pp.9-17
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• 2022

Background: No studies have reported on the effects of loess beddings on insomnia patients. Purpose: It studied the change in quality of life and quality of sleep after having 15 insomnia subjects use the bedding that emits far-infrared rays. Methods: After using loess bedding for the test group and general yellow bedding for the control group, the study was conducted in the form of a questionnaire on the WHO quality of life of the subjects. Results: In the overall quality of life evaluation, the pre-and post-changes significantly improved in the test group. Using loess bedding was greatly enhanced the physical change, the actual sleep time, and the quality of sleep of the test group. The period of sleep was significantly longer post-treating, and the habitual sleep efficiency was considerably higher, and sleep disturbance was significantly lower than before in the test group. Sleep drug use and daytime dysfunction after treating in the test group significantly improved the sleep effect. Changes in the Sociality Scale, Environmental Change Scale, and Quality of Life Scale significantly improved in the test group. The quality of life for 14 items in the test group was significantly correlated. Daytime drowsiness, depression, and anxiety scale changes were significantly improved in the test group. According to the predictive survey, the subjects felt warmth in their body and comfort in mind during and after using loess bedding and evaluated that sleep quality was good. Conclusions: The overall quality of life in the test group increased using loess bedding.

• Science of Emotion and Sensibility
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• v.12 no.3
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• pp.279-288
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• 2009

The purpose of this study was to verify the impact of cognitive factors and GSR on the task performance. For this study 64 students participated. Multiple regression and repeated measures were applied to analyze the data. The result for the survey indicated that previous knowledge, physical efforts, and task difficulty had significant impacts on task performance. Particularly, task difficulty has a negative impact. This can be interpreted as someone who has high prior knowledge inputs higher physical efforts with low task difficulty perception will show high performance. On the other hand, the low arousal level of GSR in the evaluation stage is a prediction variable of task performance. This result shows that high prior knowledge and low arousal level of GSR produces high performance. However, the analysis of difference in GSR between learning and evaluation stages does not show significant difference. It suggests that physiological measure such as GSR is reliable index of cognitive load; however, it partially represents cognitive load. Other crucial factors should be added for comprehensive measures.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2017.11a
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• pp.317-318
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• 2017

본 연구는 사전재해영향성 평가제도의 개선 방안을 제안하기 위해 환경영향성평가의 연혁 변화 및 DB 구축 시스템에 대해 살펴보았다. 또한 재해 사전 분석의 이론적 개념을 분석하여 사전재해영향성 평가제도의 이론적 개념을 살펴보았다. 이러한 결과를 바탕으로 사전재해영향성 평가의 문제점을 도출하고 개선방안을 제안하였다. 이러한 결과를 바탕으로 사전재해영향성 평가의 문제점을 도출하고 개선방안을 제안하였고, 또한 사전재해영향성평가 문제점을 환경영향성평가 비교 분석을 통해서 사전재해 영향성평가 개선방안을 제안하였다. 개선방안으로 첫째 정책적 개선안으로 행정계획 지침 분리, 소규모 개발 사업 간소화 등을 제안하였다. 둘째 기술적 개선안으로 통합관리시스템 개발, 사후재해영향성검토제 도입을 제안하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.4
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• pp.1628-1636
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• 2011

The purpose of this study is to analyze the effectiveness of horticultural therapy on children from broken homes: this treatment program, implemented in the social welfare field, targets the children's depression, self-esteem, and social and emotional stress. Its object was composed of 13 lower grade students enrolled in special facilities according to the life-cycle method, and its data were collected as making use of the structured questionnaire. The horticultural Therapy Program was practiced 14 sessions in total from September 2nd to December 16th, 2010, and its results in summary are as follows; The sociality in horticultural therapy was higher by .53 point in 2.76 after practice than in 2.23 before practice, and its value of the ability to cope with stress was higher by 0.52 point in 2.82 after coping with stress than in 2.30 before that. That was meaningful (t=-1.4398, p<.05). The value of anxiety was lower by .15 in 1.45 post-anxiety than in 1.60 pre-anxiety, and that was meaningful (t=-2.3842, p<.05). The value of self-esteem is higher by .42 in 2.92 post-self-esteem than in 2.50 pre-self-esteem, and that was strategically meaningful (t=-1.1871, p<.05). The value of emotional assessment was higher by 2.05 in 5.25 post-emotional assessment than in 3.20 pre-emotional assessment, and that was strategically meaningful (t=-2.4599, p<.05). Based on these results, this study suggests that this horticultural therapy program should apply to the issues of children in social welfare field as one of various approaches.

• Journal of the Korea Convergence Society
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• v.12 no.7
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• pp.105-111
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• 2021

The purpose of this study is to determine how the pre-test performed before training affects the results of CPR performance. In the case of the pre-test group(PTG), a pre-evaluation was performed for 1 minute before training, and the group that did not perform the pre-test(NPTG) performed only regular education. In both groups, skill test was performed for 1 minute after training. As a result of comparing the pre and post-test of PTG, there were statistically significant changes in chest compression depth, rate, and compression recoil. There was a statistically significant difference only in the chest compression rate in the chest compression performance results of the two groups after training. There was a statistically significant difference in the results of confidence after training in both groups. It is judged that the pre-test conducted before training has a good influence not only on the results of chest compression, but also on confidence improvement. Therefore, it is judged that it is necessary to develop additional programs such as pre-education test in order to increase the concentration of CPR education for the general population.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.2D
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• pp.315-322
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• 2011

The Korea government set a Act called as Before and After Study for a huge SOC projects in order to check their feasibility again at the time of design, construction and completion period. However, the evaluation items and analysis method are so vague that its effectiveness has been challenged. Especially railroad projects need to be evaluated differently by railroad construction types and rolling stocks. This paper suggests the evaluation items as a common items and exclusive items on the type of construction and rolling stocks. Also data collection in the standardized form and GIS techniques and are introduced to analyze evaluation items effectively.